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/*
* Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
* Copyright (C) 2014-2017 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#pragma once
#include "RenderStyleConstants.h"
#include "StyleBasicShape.h"
#include "StyleImage.h"
namespace WebCore {
struct BlendingContext;
class ShapeValue : public RefCounted<ShapeValue> {
public:
static Ref<ShapeValue> create(Style::BasicShape&& shape, CSSBoxType cssBox)
{
return adoptRef(*new ShapeValue(WTFMove(shape), cssBox));
}
static Ref<ShapeValue> create(CSSBoxType boxShape)
{
return adoptRef(*new ShapeValue(boxShape));
}
static Ref<ShapeValue> create(Ref<StyleImage>&& image)
{
return adoptRef(*new ShapeValue(WTFMove(image)));
}
enum class Type { Shape, Box, Image };
Type type() const;
const Style::BasicShape* shape() const;
CSSBoxType cssBox() const;
CSSBoxType effectiveCSSBox() const;
StyleImage* image() const;
RefPtr<StyleImage> protectedImage() const;
bool isImageValid() const;
void setImage(Ref<StyleImage>&& image)
{
ASSERT(type() == Type::Image);
m_value = WTFMove(image);
}
bool canBlend(const ShapeValue&) const;
Ref<ShapeValue> blend(const ShapeValue&, const BlendingContext&) const;
bool operator==(const ShapeValue&) const;
private:
struct ShapeAndBox {
Style::BasicShape shape;
CSSBoxType box;
bool operator==(const ShapeAndBox&) const = default;
};
ShapeValue(Style::BasicShape&& shape, CSSBoxType cssBox)
: m_value(ShapeAndBox { WTFMove(shape), cssBox })
{
}
explicit ShapeValue(Ref<StyleImage>&& image)
: m_value(WTFMove(image))
{
}
explicit ShapeValue(CSSBoxType cssBox)
: m_value(cssBox)
{
}
std::variant<ShapeAndBox, Ref<StyleImage>, CSSBoxType> m_value;
};
inline ShapeValue::Type ShapeValue::type() const
{
return WTF::switchOn(m_value,
[](const ShapeAndBox&) { return Type::Shape; },
[](const Ref<StyleImage>&) { return Type::Image; },
[](const CSSBoxType&) { return Type::Box; }
);
}
inline const Style::BasicShape* ShapeValue::shape() const
{
return WTF::switchOn(m_value,
[](const ShapeAndBox& shape) -> const Style::BasicShape* { return &shape.shape; },
[](const Ref<StyleImage>&) -> const Style::BasicShape* { return nullptr; },
[](const CSSBoxType&) -> const Style::BasicShape* { return nullptr; }
);
}
inline CSSBoxType ShapeValue::cssBox() const
{
return WTF::switchOn(m_value,
[](const ShapeAndBox& shape) { return shape.box; },
[](const Ref<StyleImage>&) { return CSSBoxType::BoxMissing; },
[](const CSSBoxType& box) { return box; }
);
}
inline StyleImage* ShapeValue::image() const
{
return WTF::switchOn(m_value,
[](const ShapeAndBox&) -> StyleImage* { return nullptr; },
[](const Ref<StyleImage>& image) -> StyleImage* { return image.ptr(); },
[](const CSSBoxType&) -> StyleImage* { return nullptr; }
);
}
inline RefPtr<StyleImage> ShapeValue::protectedImage() const
{
return WTF::switchOn(m_value,
[](const ShapeAndBox&) -> RefPtr<StyleImage> { return nullptr; },
[](const Ref<StyleImage>& image) -> RefPtr<StyleImage> { return image.ptr(); },
[](const CSSBoxType&) -> RefPtr<StyleImage> { return nullptr; }
);
}
} // namespace WebCore
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